/* Kids mode */
.ki-container { max-width: 820px; margin: 24px auto; padding: 16px; border-radius: 16px; background: #fff; box-shadow: 0 8px 24px rgba(0,0,0,0.08); font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", "Liberation Sans", sans-serif; }
.ki-header { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.ki-start { padding: 10px 16px; font-size: 18px; font-weight: 800; border-radius: 12px; border: 2px solid #60a5fa; background: #dbeafe; cursor: pointer; }
.ki-meta { color: #333; display: flex; gap: 12px; font-weight: 700; }
.ki-card { margin-top: 16px; padding: 16px; border-radius: 16px; background: #f8fafc; border: 1px solid #e5e7eb; }
.ki-image { display: flex; align-items: center; justify-content: center; min-height: 220px; background: #ffffff; }
.ki-image img { width: 200px; height: 200px; object-fit: contain; background: #ffffff; }
.ki-options { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 16px; }
.ki-btn { font-size: 28px; font-weight: 900; padding: 14px 0; border-radius: 14px; border: 2px solid #c7d2fe; background: #eef2ff; cursor: pointer; transition: transform .05s ease, background .2s ease; }
.ki-btn:active { transform: scale(0.98); }
.ki-btn.correct { background: #d1fae5; border-color: #34d399; }
.ki-btn.wrong { background: #fee2e2; border-color: #ef4444; }
.ki-feedback { margin-top: 10px; min-height: 24px; font-size: 18px; font-weight: 700; }
@media (max-width: 520px) {
  .ki-image img { width: 200px; height: 200px; }
  .ki-btn { font-size: 24px; }
}